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    <title>Document</title>
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<body>
    <script>
        var a = {
            q:[
                {
                    name:'jack',
                    age:'18'
                 },
                  {
                    name: 'you',
                    age: '30'
                }
                
            ],
            
        }
        for ( let i in a ){
           a[i].forEach(item => {
               if(item.name.indexOf('o')){
                   console.log(888)
               }
           });
        }
    </script>
</body>
</html>